The calculated distance (air line) between Siret and Piatra Neamţ is approximately 72 miles respectively 117 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Siret and Piatra Neamţ has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles